Quite interesting.

I know my Dolmar PS-7910 XD has some serious power in a rather lightweight package for a 2 stroke.

Edit: Reminds me of the Skyactiv-X engine that Mazda is working on.

 

What a great design!

- Jack

 

And they said the Germans in WWII had bombers with that engine design that could fly from Germany to South America without refueling. Those Germans came up with some neat stuff back then.

 

Well, this ain't exactly "new" technology. Headless designs have been around a long time. Many years back the Dr Paul single cylinder, 2 piston engine that was the size of a briefcase, made 900HP and could run all day on 5 gallons of gas. It was a zero emissions engine with an after cooler. You can eliminate a lot of the emissions by cooling the exhaust before the emissions get a chance to form. The only thing that came out of the exhaust with the Dr Paul engine was breathable air and water. About 10 years ago, Volkswagen started developing their headless engine. They have test mules currently running the roads in Europe. It's my understanding that the fuel mileage numbers are around the 65 MPGs in a 4 door car type platform. Theirs is also a zero emissions gasoline engine. Volkswagens goal was to have it for sale by 2020.

Here's the Dr Paul engine if you just want to know something about the technology. The beginning of the vid is a pic of it running in theory. Then a pic of the actual engine running. They made a 3 cylinder engine that was on test at one of the garbage dumps in Kalifornia. It was busy making biodiesel for the garbage trucks. The Dr Paul engine compression ratio as I recall is about 1,000/1. The more compression we get on the fuel, the more energy we can extract from it. The internal combustion engine is not dead, as some would like to think.